CEventCalendar::GetDisplayedSPCalendars

function GetDisplayedSPCalendars()
{
	if (!class_exists('CUserOptions'))
		return;
	$str = CUserOptions::GetOption("intranet", $this->sSPCalKey, false, $this->userId);
	$arIds = $str !== false && unserialize($str, ["allowed_classes" => false]);

	if ($str === false && count($this->arSPCalsDisplayedDef) > 0) // Set default displayed calendars
		$arIds = array_merge($arIds, $this->arSPCalsDisplayedDef);

	return $arIds;
}